在这里,我们报道了一种新的一锅法,用于从羧酸开始的SO 2 F 2介导的亲核酰基取代反应。机理研究表明,SO 2 F 2介导的酸活化是通过酸酐进行的,然后将其转化为相应的酰基氟。四丁基氯化铵或溴化物可加速酰基氟的形成。优化的卤化物加速条件可用于以30-80%的产率合成酰氟,而酯,酰胺和硫代酯的产率为72-96%,而无需对每个亲核试剂进行重新优化。
The present invention provides imidazotriazinone compounds which are inhibitors of phosphodiesterase 9. The present invention further provides processes, pharmaceutical compositions, pharmaceutical preparations and pharmaceutical use of the compounds in the treatment of PDE9 associated diseases or disorders in mammals, including CNS or neurodegeneration disorder.
The present invention provides imidazotriazinone compounds which are inhibitors of phosphodiesterase 9. The present invention further provides processes, pharmaceutical compositions, pharmaceutical preparations and pharmaceutical use of the compounds in the treatment of PDE9 associated diseases or disorders in mammals, including humans.
The present invention provides imidazotriazinone compounds which are inhibitors of phosphodiesterase 9 and pharmaceutically acceptable salt thereof. The present invention further provides processes, pharmaceutical compositions, pharmaceutical preparations and pharmaceutical use of the compounds in the treatment of PDE9 associated diseases or disorders in mammals, including humans.